docs: def pipfaster_packagefinder():
      """Provide a short-circuited search when the requirement is pinned and appears on disk.
  
      Suggested upstream at: https://github.com/pypa/pip/pull/2114
      """
      # A poor man's dependency injection: monkeypatch :(
      try:  # :pragma:nocover: pip>=18.1
          from pip._internal.cli import base_command
      except ImportError:  # :pragma:nocover: pip<18.1
          from pip._internal import basecommand as base_command
      return patched(vars(base_command), {'PackageFinder': FasterPackageFinder})